/**
* Variable default values of correct type
*
* A GraphQL document is only valid if all variable default values are of the
* type expected by their definition.
*/
func DefaultValuesOfCorrectType(context *validation.Context) RuleVisitor {
return RuleVisitor{
Enter: func(node lang.INode, info lang.VisitInfo) *lang.GraphQLError {
if varDefAST, ok := node.(lang.VariableDefinition); ok {
name := varDefAST.Variable.Name.Value
defaultValue := varDefAST.DefaultValue
typ := context.GetInputType()
if typ, ok := typ.(typs.GraphQLNonNull); ok {
return lang.NewGraphQLError(
defaultForNonNullArgMessage(name, typ, typ.OfType),
[]lang.INode{defaultValue})
}
if typ != nil && !util.IsValidLiteralValue(typ, defaultValue) {
return lang.NewGraphQLError(
badValueForDefaultArgMessage(name, typ, lang.Print(defaultValue)),
[]lang.INode{defaultValue})
}
}
return nil
},
}
}
func (r *Request) Print() string {
return language.Print(r.documentAST)
}